Code point
U+2503
Glyph appearance depends on your fonts.
U+2503
SoU+2503 BOX DRAWINGS HEAVY VERTICAL is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Box Drawing block.
Choose the representation you need, then copy its value.
U+2503
9475
┃
┃
E2 94 83
2503
00002503
%E2%94%83
\u2503
\u2503
\u2503
\2503